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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c04c1d1490f9000bc521fac500f932fe3e83fe8dd0a5ee5658048b54c084d8f1' 
  AND token = 'IgoWDCLBa82y1+MZ3/eG7X1loBAHBAOFe1RbxNZ/gxU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00074

JSON explain

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