Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddc0316c249cac640e6850297184564729b5f85a7ce2c5c618891e4466fb5c01' 
  AND token = 'blFFUPBSvXR/W7p+qk94Rymk5r10l0KoFWg2fGEoGw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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