Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3ade0bfc6badf0991ea1662107fff9a7b574d12acaf389690df6e3303bd0e2f' 
  AND token = '/lzWYYob3zOSbaObGKoPF8pR2jrGilOPbvVwe0Jl3hk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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