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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32e67984ecba2938712c9ed73ac6f6a9fc49253d96fa0c8ea553a505383e6627' 
  AND token = 'BhUJ0xdHooJR6ff4t7XEcCrMOVPRzn1d/YLezyqqTZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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