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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6560299675411162934ac0af9e91ba656c1d9608314dd5e0cabfa82ec0969ca1' 
  AND token = 'Nv1q1H2yHyxZyqC26FZjEgDj0zFdl76pG+Cj8GZ93Rw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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