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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3585c608525183ae1909da63c7ddaf94eb0c65ba377a9e346868590d48500495' 
  AND token = 'tbiX4ng1B06pTPopPldOc0iY+qB5e7F0E97wKMOqBKQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00085

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}