Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e0b22e47d0e6a2030c03ed00c60e10dbb89694189e25ac0ec01630d930c3bb3' 
  AND token = 'w3mRi2eeIi9bDB6JPTLVboHiLB8tEzMZsD3noYRYJhg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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