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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe3652f611bce98618ca13e9f4f1d6843f798a5c47eb30779f48d8ecde844087' 
  AND token = 'G7koA/3Y8U/Li+alJJg7CAgGKWAb7+nGZm2hg90+b1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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