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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ccbb9b9b506fa17c7ffd22bb0ca1c1652a9d47bed2897c5bbe58ff7d4ecadaa' 
  AND token = 'hWKXSPXKOC9gWqzfK7z81wWZjqK4WuVJv6p5Hp95ih8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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