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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f30b00bf024f84fc4c93663d29601d9329057ce8a7d6ac2bd3bd41dd808fba3c' 
  AND token = 'p5XtV0P8lq2SkGuvtMnw4CgTddRECaY6A/rXpsY9B6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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