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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1715c4cee9bad93e5cff3a3901efc612cc2b1247fea24e18cdfa3cafcf608f30' 
  AND token = 'o/LIO4KMWPsGiD23eoFKihTNBFZY/H4hkPtSgOCRe7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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