SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6762e64abe14da5c57b8930018eb09c9fdd93748ded6b46b89a350f3859667e6' 
  AND token = 'w9px5QGY2bzZ47hvHFYpRPENPQwZkzUVZrDtCoK5aAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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