Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f451aea991ec6fbae281346e48ce7a209ef8f2f04023f74cb8c842a5ef3c346d' 
  AND token = 'B6Jq+Bzy01V3uMtb+Jaaqni4Km7azdtn4Gq33ke1NQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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