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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '04d307042225c226564f563e51917000ca1f45ee538a55f95d420ca4e8fa056d' 
  AND token = 'stO0IalQw9G8pis6ki8X0YZypq9CNU2YcNV+ba0ddJc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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