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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddb642274385c6f6184554a866f67f9dcca9277f36253ff53f5d940efd548d6e' 
  AND token = '1E0lFPhYdYsprF7IGdSU5JZo9SvlWCA7+1dB+d1885U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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