Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab3199e234bfa05340b252b2c3c2062f970b27a19cff88945f536e4aa055815d' 
  AND token = 'CIKLfzZNS34WAliDVvIdAOcnbW+59999a4mLC8RSFes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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