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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cae220919f597b5f5c78ec1d2be21f47637162d086b899b7215e656f260b78d' 
  AND token = 'IWcu7J0MA2Er/WfCPOBKYEDDO1s1BTjVnWLD1XwLAJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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