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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a716e0de98f891052bb27d30f7bf11750f1e2e4d35d2bd703eb4d0908038ba7f' 
  AND token = 'r72mGnYdG/4CMFQIwGurIbiEO9LqOr3lcbE/vUutsU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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