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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb84611870a58eefbe4cbfd266843ea529beaadd870c997bab1ed81f1c91622a' 
  AND token = '05KJDOyR4RG0xSlxyI/s8o/ieQDJJUqJz4vFikC+jO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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