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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02d0322e1b4f37a2d72377a835855495bc0cc3e9b93f35aa5f50e7cd0eaa5ba3' 
  AND token = 'RP4NwqJ/id3PtlqGH9nfdf/vqNOBYp6avsMrIzRKpZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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