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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05add8ef2a00bf277e25a4d0cac3fa2ca94fdcd0682b43e6b60d8fc28aa9492e' 
  AND token = 'JrNg07Y65qLwxAn3PoEZBTCsK2V6VyvybyGbEuLyjvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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