Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c177f69e7afa811cab4122bb06164408c3e1c52c92b426ad8218d2ef3915388e' 
  AND token = 'EXp8ZNDflWR2gIrayKyerG8XsWHO/WkB15LMuMDXtkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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