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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '26d224635d3ba5dfbba60003dd952798808949f6bc357f0ee3e56a9fcc2e0253' 
  AND token = 'Sr+Ya8169ec4TWaq1Kh66AQNSsTVfHogM9M1h8zP72E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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