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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32b4be82bc55ed1a4b98ef2d1a8cd8fcf8283eb6d3c97a1c0663b1bd92ea0593' 
  AND token = '7J/YPSBm8qCHqLYrPk0QqPGArsr9hs90vNm2UQ+TNn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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