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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '067a7f70578a5c8b895b1a2f77be44ae5e581b2688d48e679921586d5d926284' 
  AND token = 'xK9Pamv6q6onF5YKRjEUjkmJ/UtnfIzrqkzOPmdX2XE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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