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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60e220522fec6f035c272abdb993df6bd481b82ec9e2f3f9f0aa5b02599d2a80' 
  AND token = 'Ig+p8ZWh+k6wQYPcX6jsmFDvqKsZ9QuaTKIdLAb8Fz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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