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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07ea43b5edc43100d000c2ba3e4475bf56bbea1457645a2ce168713107d4bfa4' 
  AND token = 'TGjN/zUIym1nZ2z3vS9VmLNlsiJxJvm5N7ZPZh1SaMI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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