Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dded7bbe2c13c4c95c0be0baa0490c04be52fc1977b7bfa244961539ea77b803' 
  AND token = 'c1+04yt3Lyvxql0hqs+S2l7jku2zS7EfTckGTArif00=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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